Sony Bluetooth Utility - Manual (Page 4)

Please ensure that your devices have been accordingly situated, and that the above devices are not in use when you are operating your Bluetooth
device.
The Bluetooth™ wireless technology devices must be switched ON
Bluetooth™ wireless technology cannot be used if the devices have not been switched ON.
Some PCs and other components will have a Bluetooth™ wireless technology communication switch that is operated independently from the main
power. Bluetooth™ wireless technology cannot function if this switch has been turned off.
 Using PCs with onboard Bluetooth™ wireless technology
 When using a Bluetooth™ wireless technology USB adapter or SD card
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